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PM
- Thread starter El Timbo
- Start date
I have never had PM. I believe it's an environmental issue. Changing plants isn't the answer.
Outdoor plants are bred with mold resistance as a big concern. Some of the newer stuff is more concerned with speed than mold though. We can't have everything.
Where do you grow?
Outdoor plants are bred with mold resistance as a big concern. Some of the newer stuff is more concerned with speed than mold though. We can't have everything.
Where do you grow?
Douglas.Curtis
Autistic Diplomat in Training
You can take the same clones and grow them different ways, and you'll find the healthiest ways grow plants which are naturally resistant to PM. An additional consideration (at least with indoor grows) is ventilation, where high filtration and flow rates will also significantly reduce the appearance of PM. So when someone says their strain is PM resistant, you'll also want to include their grow style in the equation. 
I have grown several strains now which people have PM issues with, and I have seen no PM issues with them.
Truly amazing to see the same clones thriving next to (and even touching) PM ridden versions of themselves, all caused solely by nutritional differences.
Hope that helps
I have grown several strains now which people have PM issues with, and I have seen no PM issues with them.Truly amazing to see the same clones thriving next to (and even touching) PM ridden versions of themselves, all caused solely by nutritional differences.
Hope that helps
El Timbo
Well-known member
You can take the same clones and grow them different ways, and you'll find the healthiest ways grow plants which are naturally resistant to PM.
Truly amazing to see the same clones thriving next to (and even touching) PM ridden versions of themselves, all caused solely by nutritional differences.
Hope that helps
Thanks - any clues as to which nutritional protocols have worked for you?
I would dive into nepalese outdoor varieties.
However there seem to be more and less resistent individuals in every variety, so it mostly depends on chance and selecting the best individuals.
I say nepalese od varieties because of general resistence to all elements, at least it's an assumption, can't back it with experience.
Cheers
However there seem to be more and less resistent individuals in every variety, so it mostly depends on chance and selecting the best individuals.
I say nepalese od varieties because of general resistence to all elements, at least it's an assumption, can't back it with experience.
Cheers
El Timbo
Well-known member
...
Yes I am finding that as well... thanks for the tip.
lol...right. Great response. If you haven't ridden a Bicycle, then posting in a bike thread may not be your best option.
I have had pm a time or two and I would Think that the reason you didn't get a response on the land race thread was because a "pm resistant strain" would be very subjective.
I'm not saying there isn't such a thing, I'm just saying that since pm is NOT systemic, (Genetics can not play a part in resistance) Environment, humidity, ph and spore availability would make PM potentially an issue anywhere on any material if the conditions are right.
To your point, there "Might" be certain land race strains that would be advertised as pm resistant, when actually, they just come from a more dry or arid climate that makes manifestation of pm more difficult. Take that same strain and put it in a humid PNW greenhouse and watch the pm manifest.
Unfortunately, my response is as useless as the guy completely unaware of dealing with pm. Bottom line, I don't think there is any such thing as a PM resistant strain anymore than there is a insect resistant strain. Different stuff works for different growers in different scenario's.
Happy Growing.
After 20 years of growing I had only seen it in an odd instance or two, usually never. Just didn't happen in my gardens and I was growing a wide variety of genetics. About 2 years ago that all changed as I started noting PM in every almost every grow. I've tried to reduce humidity, upping the fresh air flow, meticulously clean and all that ...but I still get PM now. It's a big hassle and almost enough to make me pitch it all and just buy from the dispensaries ... but that is an $$$$$$$$$$$ way to go.
My experience with it has been that yes, some plants are more, or less, susceptible to it. I have some lines (I clone and keep lines a long time if I like them) however that, while their not 100% immune, they are very resistant and I can still get them through a whole grow cycle with little or no PM.
One resistant line is Code Blue from "the Docta" at Archive Seeds. It is one hardy, easy to grow, strong genetic plant. The other is a cut of HSO Blue Dream (I think the "blue" designation in both is coincidental ... they are entirely different genetic lines.) The BD isn't quite as resistant as the Code Blue, but it's better than most everything else.
Constant spraying with Green Cure is about my only solution beyond making the environment as dry/clean as possible. I can nurse some really nice, PM susceptible, plants all the way through, but it's a big fucking hassle and I'm sure it diminishes the quality of the final product.
If there's any magic cures or strategies out there, I'd love to hear them.
best
Rabbit
El Timbo
Well-known member
This is why I started this thread in this forum rather than a general growing forum... there are plenty of how to deal with PM threads...so far I have a Schnazzleberry 3 that seems to be immune (although her sisters weren't) and 4 Malawi x PCK that are also resistant - and most of their sisters were somewhat resistant.
Douglas.Curtis
Autistic Diplomat in Training
From reference and some personal experience...
- The more open the flower structure (yes, sativas) the less susceptible it will be to mold.
- Calcium and Silicon availability/uptake are very important for natural defenses against PM
- Low air flow rates significantly increase any existing PM issue
- High micron filtration of intake air significantly reduces PM infection rates
Long term, I strongly recommend doing seed runs and sprouting in PM conditions with your grow style/media. Choose the seedlings which grow well and choose your keepers from that pool.
- The more open the flower structure (yes, sativas) the less susceptible it will be to mold.
- Calcium and Silicon availability/uptake are very important for natural defenses against PM
- Low air flow rates significantly increase any existing PM issue
- High micron filtration of intake air significantly reduces PM infection rates
Long term, I strongly recommend doing seed runs and sprouting in PM conditions with your grow style/media. Choose the seedlings which grow well and choose your keepers from that pool.
As for the first part, that could be a lot about where you live, and environment in your room,
As far as your issues as of late, I don't know your situation, but if you're like me, you run a continuous garden, the problem is that you never actually are able to clean the spores out. They can catch on a hood, fan or windowsill and remain dormant until a few months later when a fan kicks them back up in the air and they settle on a leaf, Clock starts and the spore manifests and 7 days later you have noticeable white spots on your plants.
The only way I can fight this is with that OMRI safer anti-fungal that you use. I try to defoliate any lower leaves I see, but am careful to spray down any new spots developing.
For years and years I repeated that PM is somehow systemic because I'd be really clean for 6 months and then notice some pm in late flower.
Turns out that there are only two kinds of PM that affect Cannabis. They affect only cannabis and other pm's you see on your roses or squash is a different variety that will not manifest on pot.
Woof, Don't do it friend. That's like cutting off your arm over a case of poison oak. Sure eliminates the problem but the baby's gone with the bathwater. Treat your girls like you treat your own body and your kids bodies, If they get lice or scabies your don't line them up and shoot then (and visit other kids at the orphanage) you fix the problem. Same here. And PM is a very MINOR issue. You already know all the tricks to combat it. Make it so,
Yup, I've come to all kinds of self induced theories about what I need to do with what strains to eliminate it. Since pm can only form if the ph on the surface of the plant is correct, the mission is to change that ph. Some leaves on some strains "Might" seem more susceptible to PM just because maybe the leave has a deeper grove to catch the loose spore or that strains favors an absolutely wrong surface pm. Who knows. What's important is to realize that it is NOT systemic and it is a 100% surface battle that you can control.
O and by the way, did you know that spider mites come automatically with GG#4. It's a side breeding back cross of the chocolate diesel that involves an active gene of the borg.. lol. KIDDING. But those fuckers sure do seem to find that material quickly.
Yup and yup. When we first learn to grow, we want everything absolutely perfect. Kind of like Marriage. Then as we progress we begin to understand that there are so many "Side affects" of being God with our plants and it turns out that everything just isn't perfect every time we operate. A true grower has learned that the only way to learn perfection is to constantly fix the daily issues that arise and then sometimes..... You get the perfect bud at the end.
Happy Growing.
El Timbo
Well-known member
Can you provide evidence for this?
It's not really mould as we view it. Mould is a cotton like growth. PM is a fungus. It's everywhere, you can't escape it. You just need to use enough preventative measures to stop it ever getting a real hold. That's why I have never had it. I practice a number of preventative techniques.
I did get it outdoors once, but got rid of it that day. Realistically, 70% RH alone won't cause a PM problem.
I did get it outdoors once, but got rid of it that day. Realistically, 70% RH alone won't cause a PM problem.
El Timbo
Well-known member
Long term, I strongly recommend doing seed runs and sprouting in PM conditions with your grow style/media. Choose the seedlings which grow well and choose your keepers from that pool.
That's my plan - I think it would be useful to start with seeds that may have a better chance of being resistant though.
El Timbo
Well-known member
When you grow different plants side by side and some are affected and others aren't you can assume that those that aren't are resistant.
No, I have better things to do than your research. You asked a question, I gave you the answer and you want me to prove it. lol
Please prove it yourself. Or disprove it if that makes you feel better.
Good luck on the PM resistant strains, I will look for your success in the future.
HG
